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Long-term health consequences are influenced by circumstances that occur during pregnancy. The convergence of the maternal and fetal circulations occurs in the placenta, which is the first organ to develop. Placental pathology provides an accurate diagnosis of amniotic sac inflammation, and pathological alterations in preterm placentas provide evidence for the causes of numerous perinatal pathologies, including spontaneous preterm births. This retrospective study aimed to re-examine placentas regarded as normal by the Obstetrics and Gynecology Department at our institution. Thirty-seven male and forty-seven female placentas were collected following full-term delivery, and the grading and staging of any evident inflammatory responses were evaluated and correlated with the babies' sex. Full-thickness placental samples that were considered normal and not sent to the histopathology department were obtained from the central and marginal regions of placental discs. Morphological examination of the fresh placenta was conducted, and fetal and maternal inflammatory response syndromes were assessed. In addition, placental villitis of unknown etiology (VUE) and chronic deciduitis were evaluated. Immunohistochemistry was performed to evaluate the patterns of inflammation in the placenta using anti-CD8 and anti-CD68 antibodies. The correlation between silent pathologies and clinical complications or the development of fetal inflammatory response syndrome was measured. In this study, 17 (20%) maternal and 10 (12%) fetal samples showed inflammatory responses. The frequencies of chronic deciduitis and VUE were higher among pregnant Saudi women than previously reported, probably because fetal inflammatory response syndrome goes unnoticed in Saudi Arabia. In addition, the prevalence of fetal and maternal inflammatory responses was higher in the placentas of the mothers of males than in those of females, suggesting that differences occur in the inflammatory response in the placenta depending on the sex of the newborn. Grading placental inflammation (in cases of VUE) typically predicts the degree of maternal anti-fetal cellular rejection; therefore, increasing the number of placental samples sent for microscopic inspection may be preferable because of their significance in identifying the causes of chronic disorders.
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INTRODUCTION: Telepathology, a rapidly evolving field in modern healthcare, has the potential to significantly impact the diagnosis and management of diseases. This study aimed to assess the prevalence of acceptance and knowledge, the likelihood of future use, and the perceived advantages and disadvantages of telepathology among healthcare workers (HCWs) and patients in Saudi Arabia. METHODS: A cross-sectional study was conducted with 388 participants, including 179 HCWs and 209 adult patients across Saudi Arabia. Data were collected using a bilingual, self-administered, and anonymous computer-based questionnaire. The Statistical Package for Social Sciences (SPSS, IBM Corp., Armonk, NY) was employed for data analysis. RESULTS: The participants had an average knowledge rate of 80.3% (n=312) concerning telepathology. A substantial 88.16% (n=342) were inclined towards its acceptance, and an optimistic 89.97% (n=349) foresaw its potential utility. Among the respondents, 70% (n=272) pinpointed "expedited results" as the principal merit of telepathology. However, 60% (n=233) flagged "the necessity for costly infrastructure" as its chief limitation. CONCLUSIONS: The insights derived underscore a prominent knowledge and endorsement of telepathology among the Saudi population and HCWs. Despite certain drawbacks, participants believe that telepathology is feasible and offers numerous benefits that could greatly enhance the healthcare system in Saudi Arabia. Future research should focus on evaluating its practical implementation and efficacy within healthcare facilities.
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Dasatinib is an effective treatment for chronic myeloid leukemia. However, cases of idiosyncratic hepatotoxicity were reported. This study was conducted to investigate the chemopreventive effects of hydroxychloroquine against dasatinib-induced hepatotoxicity. Balb/c mice were randomly assigned into four groups; vehicle control (5% DMSO, i.p., n = 6), dasatinib (50 mg/kg; i.p., n = 6), hydroxychloroquine (10 mg/kg, i.p., n = 6), and hydroxychloroquine + dasatinib (10 mg/kg + 50 mg/kg; i.p., n = 6). Treatments were given once every 2 days for 14 days. Serum and histopathological assessments of liver architecture and fibrosis were performed using H&E, Masson's trichrome, and reticulin staining. The infiltration of lymphocytes was assessed using immunohistochemistry. The gene expression of antioxidant enzymes (CAT, SOD-2, GPX-1) was assessed using real-time quantitative PCR. Dasatinib showed a significant increase in liver injury biomarkers (AST and ALT) with higher lymphocytes infiltration (as indicated by CD3+, CD4+, CD8+, and CD20+ immunohistochemistry). Hepatic tissue of Dasatinib group exhibited significant downregulation in the gene expression of antioxidant enzymes (CAT, SOD-2, and GPX-1) compared to the control group. However, the combination of hydroxychloroquine with dasatinib showed a slight increase in AST and ALT. Also, hydroxychloroquine + dasatinib treated mice showed a significant reduction in lymphocytes infiltration as compared to dasatinib. The results showed that dasatinib induces an immune response leading to an increase in lymphocytes infiltration which promotes hepatocyte destruction and persistent liver injury. The results also suggest that hydroxychloroquine ameliorates dasatinib-induced hepatotoxicity via reduction in hepatic infiltration of T and B immune cells.
Subject(s)
Chemical and Drug Induced Liver Injury, Chronic , Hydroxychloroquine , Animals , Mice , Dasatinib/pharmacology , Dasatinib/therapeutic use , Hydroxychloroquine/therapeutic use , Antioxidants , Superoxide DismutaseABSTRACT
Dasatinib (DASA) is a novel tyrosine kinase inhibitor, approved for leukemia treatment. However, the long-term use of DASA induces several complications, especially liver damage. On the other hand, Naringenin (NGN) is a potent antioxidant and anti-inflammatory agent which is known to exert protective effects in several liver disease animal models. Yet, the effect of NGN on DASA-induced hepatotoxicity has not been examined. This study investigated the hepatoprotective effects of NGN against DASA-induced acute liver injury, using a mouse model. The mice were given NGN (50, 100, and 200 mg/kg po) or saline for 7 days, followed by DASA on the eighth day (25 mg/kg p.o.). DASA treatment alone was found to cause overexpression of proinflammatory cytokines, such as interleukin-10 (IL-10), tumor necrosis factor-alpha (TNF-α), and malonyl aldehyde (MDA), whereas attenuation of antioxidant genes including superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase (GST), and glutathione peroxidase (GPx). Interestingly, a pretreatment with NGN + DASA resulted in minimizing the proinflammatory mediators and restoring the levels of antioxidant genes. In addition, there was evidence of necro-inflammatory changes in histopathological findings in the liver samples after DASA administration which remarkably reduced with NGN + DASA. Thus, this study revealed that NGN could minimize the hepatotoxicity induced by DASA by providing anti-inflammatory and antioxidant protection.
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COVID-19 is a highly contagious disease caused by SARS-CoV-2. Vaccination against the virus was first approved in Saudi Arabia in December 2020. Vaccinated individuals are still at risk of getting infected with the virus and can transmit the disease. Therefore, the perception of vaccinated individuals regarding the disease can help limit the spread of the virus. OBJECTIVES: To measure the risk perception of COVID-19 following vaccination and factors that have an effect on risk perception; to identify the health protective behaviours of the vaccinated individuals. METHODOLOGY: This is a quantitative analytical cross-sectional, questionnaire-based study. The target population includes individuals aged 18 and above who live in the Riyadh region and have been vaccinated, during the period of June 2021 to December 2021. RESULTS: The perception of 30.2% of participants did not change after vaccination, with many participants continuing to "always" take precautions even after vaccination. Numerous factors, such as age, gender, marital status, occupational status, employment status, and total household income, have shown significant effects towards risk perception. CONCLUSION: Many vaccinated individuals have continued to take precautionary steps and their risk perception has not changed.
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Lipopolysaccharides (LPS), the lipid component of gram-negative bacterial cell wall, is recognized as the key factor in acute lung inflammation and is found to exhibit severe immunologic reactions. Phosphodiesterase-4 (PDE-4) inhibitor: "apremilast (AP)" is an immune suppressant and anti-inflammatory drug which introduced to treat psoriatic arthritis. The contemporary experiment designed to study the protective influences of AP against LPS induced lung injury in rodents. Twenty-four (24) male experimental Wistar rats selected, acclimatized, and administered with normal saline, LPS, or AP + LPS respectively from 1 to 4 groups. The lung tissues were evaluated for biochemical parameters (MPO), Enzyme Linked Immunosorbent Assay (ELISA), flowcytometry assay, gene expressions, proteins expression and histopathological examination. AP ameliorates the lung injuries by attenuating immunomodulation and inflammation. LPS exposure upregulated IL-6, TNF-α, and MPO while downregulating IL-4 which were restored in AP pretreated rats. The changes in immunomodulation markers by LPS were reduced by AP treatment. Furthermore, results from the qPCR analysis represented an upregulation in IL-1ß, MPO, TNF-α, and p38 whereas downregulated in IL-10 and p53 gene expressions in disease control animals while AP pretreated rats exhibited significant reversal in these expressions. Western blot analysis suggested an upregulation of MCP-1, and NOS-2, whereas HO-1, and Nrf-2 expression were suppressed in LPS exposed animals, while pretreatment with AP showed down regulation in the expression MCP-1, NOS-2, and upregulation of HO-1, and Nrf-2 expression of the mentioned intracellular proteins. Histological studies further affirmed the toxic influences of LPS on the pulmonary tissues. It is concluded that, LPS exposure causes pulmonary toxicities via up regulation of oxidative stress, inflammatory cytokines and stimulation of IL-1ß, MPO, TNF-α, p38, MCP-1, and NOS-2 while downregulation of IL-4, IL-10, p53, HO-1, and Nrf-2 at different expression level. Pretreatment with AP controlled the toxic influences of LPS by modulating these signaling pathways.
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BACKGROUND: The annual prevalence of gestational diabetes mellitus-characterized by an increase in blood glucose in pregnant women-has been increasing worldwide. The goal of this study was to evaluate the expression of glucose transporter 1 (GLUT1) and glucose transporter 3 (GLUT3) in the placenta of women with gestational diabetes mellitus. METHODS: Sixty-five placentas from women admitted to the King Saud University Medical City, Riyadh, Saudi Arabia, were analyzed; 34 and 31 placentas were from healthy pregnant women and women with gestational diabetes, respectively. The expressions of GLUT1 and GLUT3 were assessed using RT-PCR, Western blotting, and immunohistochemical methods. The degree of apoptosis in the placental villi was estimated via a TUNEL assay. RESULTS: The results of the protein expression assays and immunohistochemical staining showed that the levels of GLUT1 and GLUT3 were significantly higher in the placentas of pregnant women with gestational diabetes than those in the placentas of healthy pregnant women. In addition, the findings showed an increase in apoptosis in the placenta of pregnant women with gestational diabetes compared to that in the placenta of healthy pregnant women. However, the results of gene expression assays showed no significant difference between the two groups. CONCLUSIONS: Based on these results, we conclude that gestational diabetes mellitus leads to an increased incidence of apoptosis in the placental villi and alters the level of GLUT1 and GLUT3 protein expressions in the placenta of women with gestational diabetes. Understanding the conditions in which the fetus develops in the womb of a pregnant woman with gestational diabetes may help researchers understand the underlying causes of the development of chronic diseases later in life.
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Enterobius vermicularis is a threadlike parasite also known as "pinworms". It is the most common helminth infection, affecting the gastrointestinal tracts of children worldwide, although it seldom causes any fatalities. Enterobius vermicularis infections are usually asymptomatic and may only cause anal pruritis, with occasional reported cases of ectopic migration into the appendix or the female genital tract by adult pinworms. Here, we report a case of a 15-year-old girl who presented to the emergency department with high-grade fever, vomiting, and vague abdominal pain for three days. She was diagnosed with acute abdominal pain and underwent emergency ileocecectomy, but died the following day. Pathological examination of ileocecal junction showed intraluminal and intramural Enterobius vermicularis, which were attributed as the cause of her death in the absence of any other pathologies. Death due to Enterobius vermicularis is rare; this case calls for clinicians to be vigilant in exploring Enterobius vermicularis infections in patients with undiagnosed acute abdominal pain, since it could be a potential cause of death.
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Background: Placental insufficiency causes fetal adaptation, leading to fetal programming of chronic diseases. Placentas with intrauterine growth restriction (IUGR) are smaller than average and may contribute to low birth weight of the newborn. The number of patients with IUGR in the Saudi population is increasing; however, little is known about their placentas. The aim of this study was to assess morphometric and histopathological placental changes in Saudi patients with IUGR. Methods: Overall, 20 healthy pregnant Saudi women (control group) and 20 pregnant Saudi women with IUGR were enrolled. Maternal and fetal morphometric measurements were recorded. The placentas from both groups were processed for histopathological examination using stereological techniques. Results: The IUGR group had lower placental weight, volume, length, breadth, and surface area than the control group. The total volume of villi and surface area of the terminal villi were significantly reduced in the IUGR placentas. IUGR group had a reduction in birth weight; length; and circumference of the head, chest, abdomen, and thigh compared to control group. Conclusion: The reduction in placental mass, specifically the reduction in the volume and surface area of villi, the functional units, may have reduced the capacity for nutrient transport. This led to a significant reduction in neonatal measurements. The fetus rearranged nutrient distribution in favor of the brain and other essential organs; however, at the expense of thigh development and growth. This fetal trade-off strategy increases the risk of developing chronic diseases in adulthood. Therefore, IUGR infants may require more clinical attention.
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Objective: In this study, we investigate the molecular rearrangement of FOXO1 in alveolar rhabdomyosarcoma (ARHS) in Saudi pediatric patients. Method: We performed a molecular detection of molecular translocation in 30 pediatric cases of ARHS using FOXO1 dual color break-apart FISH probe (ZytoLight®, 13q14.11) and PAX5 dual color break-apart FISH probe (ZytoLight®, 9p13.2). Results: All analyzable cases of ARHS demonstrated FOXO1 translocation whereas PAX5 translocation was not detected in any case. Conclusion: Although the testing for PAX5 rearrangement was based on protein-protein network analysis, our study showed that PAX5 translocation is not conspicuous in ARHS. PAX7/3::FOXO1 fusion genes feature ARMS, rendering crossreactivity between PAX7 and PAX3 a possible explanation. Nevertheless, PAX5 immunoreactivity and molecular translocation could be an adjunctive pathway that is confined to aggressive ARMS.
Subject(s)
Rhabdomyosarcoma, Alveolar , Rhabdomyosarcoma , Humans , Rhabdomyosarcoma, Alveolar/diagnosis , Rhabdomyosarcoma, Alveolar/genetics , Saudi Arabia , In Situ Hybridization, Fluorescence , Translocation, Genetic , Oncogene Proteins, Fusion/genetics , Forkhead Box Protein O1/genetics , PAX5 Transcription Factor/geneticsABSTRACT
We report a case of a benign glandular schwannoma in a 63-year-old male who presented with a solitary subcutaneous mass on the left knee, with no previous history of neurofibromatosis type 1. This histological subtype is rare, with only 38 cases reported in the literature. Some of the glands found in this patient resembled sweat glands. These lining stromal spindle cells were positive for S-100 but negative for EMA. S100 was faintly staining the glandular elements. All the glands in the tumor were positive for EMA, particularly at the luminal borders. They were also positive for pancytokeratin. The cystic areas variably show intraluminal, foamy, and hemosiderin-laden macrophages. The different glands expressed two patterns. Some of these were reactive for CK7 and low molecular weight keratin. Immunohistochemical workup is mandatory to assess the neoplastic nature of this glandular component.
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Sudden unexplained death (SUD) is a sudden, unexpected, and unexplained death in an individual older than 1 year. It is one of the most devastating and tragic events to families and the community at large, particularly when it happens at a young age. Finding the cause of SUD is extremely important in order to prevent its recurrence in the family, and to help understand the epidemiology of SUD in the community. It has been well-established that the most effective way of finding the cause of SUD is by performing a medical autopsy. In many countries, medical autopsy is mandated in SUD cases. In others, however, medical autopsy is rarely performed for the purpose of identifying the cause of SUD, which is the case in Saudi Arabia. In this review, we discussed the importance of finding the cause of death in SUD cases, the role of different types of medical autopsies, and the state of medical autopsy in Saudi Arabia. Moreover, we proposed a clinical pathway to incorporate medical autopsy in the care of SUD cases, and to connect family members to the health care system in order to perform cascade screening.
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[This corrects the article DOI: 10.1016/j.sjbs.2022.02.023.].
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OBJECTIVE: In this study, we investigate the molecular rearrangement of EWSR1 in hyalinizing clear cell carcinoma (HCCC) (with and without eosinophilia) and clear cell variant of mucoepidermoid carcinoma (MEC) of salivary glands. METHOD: We performed a molecular detection of HCCC (Group 1) and clear cell variant of MEC (Group 2). Group 1 consisted of 5 cases of typical HCCC and 5 cases of HCCC with eosinophilia. Group 2 encompassed 5 cases of clear-cell MEC. For both groups, we conducted a FISH analysis using EWSR1 dual color break-apart FISH probe (ZytoLight®, 22q12.2) and MAML2 dual color break-apart FISH probe (ZytoLight®, 11q21). RESULTS: All analyzable cases of HCCC with or without eosinophilic components were negative for EWSR1 translocation. All cases of clear-cell MEC were positive for MAML2 translocation. No translocation was observed in HCCC. CONCLUSION: Our study showed that clear cells could cause diagnostic uncertainty and that EWSR1 can be detected in many primary neoplasms of salivary glands and metastatic tumors that were reported in salivary glands. We suggest that recommending EWSR1 as a diagnostic molecular marker for HCCC should be reconsidered.
Subject(s)
Adenocarcinoma, Clear Cell , Carcinoma, Mucoepidermoid , RNA-Binding Protein EWS , Salivary Gland Neoplasms , Adenocarcinoma, Clear Cell/diagnosis , Adenocarcinoma, Clear Cell/genetics , Adenocarcinoma, Clear Cell/pathology , Carcinoma, Mucoepidermoid/diagnosis , Carcinoma, Mucoepidermoid/genetics , Humans , In Situ Hybridization, Fluorescence , RNA-Binding Protein EWS/genetics , Salivary Gland Neoplasms/diagnosis , Salivary Gland Neoplasms/genetics , Salivary Gland Neoplasms/pathology , Salivary Glands/pathology , Transcription Factors , Translocation, GeneticABSTRACT
INTRODUCTION: Although autopsy plays a vital role in forensic medicine, the rates have been recently declining around the world. We surveyed all interns and physicians at our hospital to determine how Saudi physicians viewed autopsies with regard to the challenges, priorities, and requirements, and also how they felt about autopsy-based research and postmortem examination techniques. The results shed light on how these constructs affected the physician's perception of the implications of autopsy. METHODS: We prepared a cross-sectional study using a self-administered multiple-choice questionnaire distributed to interns and physicians at our institution. From a population of 596 physicians, we sampled 234. Structural equation modeling was used to assess 6 constructs and their 40 indicators. RESULTS: The survey results demonstrated two main barriers for interns and physicians to perform autopsies: respect for the religious beliefs of the families of the deceased and respect for family mourning. CONCLUSION: Measures can be taken to improve autopsy rates, such as training of medical staff in communication and counselling, implementing a streamlined and stress-free process, and increasing public awareness of the benefits of autopsy through campaigns and educational programs. Among the many virtues of educating Saudi physicians and residents about the significance of increasing autopsy rates and familiarizing them with their procedures, developing professional competence among medico-legal experts cannot be overemphasized.
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Physicians , Autopsy , Cross-Sectional Studies , Humans , Latent Class Analysis , Saudi Arabia , Surveys and QuestionnairesABSTRACT
(1) Background: Pyoderma gangrenosum (PG) is a rare neutrophilic dermatosis of unknown etiology. Coronavirus disease 2019 (COVID-19) vaccines can cause a variety of adverse cutaneous manifestations. PG associated with mRNA vaccines has not previously been described. This case study reports on the first patient to develop PG after receiving BNT162b2. (2) Case Presentation: An otherwise-healthy 27-year-old man developed multiple skin lesions 24 h after receiving the first dose of the messenger RNA-based Pfizer/BioNTech BNT162b2 COVID-19 vaccine. When in hospital, he developed a new painful ulcerative lesion on his right hand. Skin ulcer edge biopsy showed severe epidermal neutrophilic infiltrate with epidermal and dermal edema, underlying superficial dermal necrosis, and characteristic undermining with extensive mixed inflammatory infiltration of the dermis and abscess formation consistent with an ulcer with mixed dermal inflammation compatible with pyoderma gangrenosum. The lesion showed rapid improvement after the initiation of immunosuppressive therapy. (3) Conclusions: PG may be a rare adverse event related to the BNT162b2 vaccine, which could be more frequently encountered with the wide-scale use of mRNA vaccines. The continuous monitoring and surveillance of skin manifestations post-vaccination is essential.
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The histologic diagnosis of acute ascending intrauterine infection permits a higher-efficacy identification of both subclinical infection and clinical chorioamnionitis, but procedures for placental pathology need to adopt a unified approach and work toward reproducible grading and staging systems. We conducted a retrospective chart review of 696 placental records from single and multiple deliveries between January 2011 and February 2020. Then, we compared original diagnoses with diagnoses based on Redline criteria, which is an internationally recognized system of staging and grading. Of the 696 cases available for review, 255 had complete medical records. Findings showed a strong degree of agreement (90%-100%) between original investigators' histological diagnoses of acute ascending intrauterine infection and a review by researchers using Redline criteria. Although interobserver agreement was good, more education is needed on Redline criteria to avoid missed cases (primarily Stage 1), support protocols for pathologists and obstetricians/gynecologists in determining which cases need to be investigated, and the development of reporting standards for acute ascending intrauterine infection and feedback mechanisms during follow-up.
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Chorioamnionitis/diagnosis , Chorioamnionitis/pathology , Female , Humans , Observer Variation , Pathologists , Pregnancy , Retrospective StudiesABSTRACT
OBJECTIVE: Resident physicians working in medical specialties play an essential role in the makeup of the healthcare workforce. However, there is little theoretical understanding of how different medical specialties are perceived or how residents' choices are made. Many factors can influence resident physicians' choice of specialty. Previous studies have looked at personality differences within specialties, but were unable to describe the heterogeneity of viewpoints that existed within each specialty. Our objective, was to gather information about factors related to resident's life goals and career motivation as a means of improving residency program design and enhancing the college's advisory capacity. DESIGN: Our study used a self-report anonymous questionnaire to characterize the relationship between resident physicians' preferences and their choice of specialty. SETTING: King Saud University & King Saud University Medical City. PARTICIPANTS: 353 residents. RESULTS: The majority of respondents reported that their current specialty was one of their top three choices. Almost half were satisfied with their residency program, and 24.1% were very satisfied. Gender, specialty, and workload demonstrated significant associations with residency program satisfaction. CONCLUSIONS: Our findings highlight the effects of career motivation and life goals for resident physicians in enhancing their career satisfaction. Ensuring that residents are able to find time for personal needs has important consequences for their perceptions of wellbeing and may be an effective strategy for promoting career satisfaction.
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Internship and Residency , Medicine , Career Choice , Goals , Humans , Motivation , Surveys and QuestionnairesABSTRACT
Gestational diabetes mellitus (GDM) poses significant long- and short-term risks to both the developing fetus and the mother. GDM can lead to maternal complications during pregnancy and increase the mother's risk of developing type 2 diabetes mellitus and cardiovascular disease later. The present study aimed to evaluate the maternal and fetal vasculopathies in the placenta of Saudi women with GDM. This prospective study examined 84 placentas from full-term pregnant women with no complications other than GDM; 40 placentas were collected from healthy women (controls), and 44 were collected from women diagnosed with GDM. The sampling took place in King Saud University Medical City, Riyadh, between January and August 2019. All placentas were histologically examined according to the Amsterdam Placental Workshop Group (2014, 2015). The results showed that the most common placental changes on the maternal side of the placenta in the GDM group were significant syncytial knots (77%), calcification (70%), villous agglutination (57%), decidual vasculopathy (43%), and retroplacental hemorrhage (34%). Placental infarction was the least common placental change in both groups. On the fetal side, vasculopathies included significant villous fibrinoid necrosis (70.5%), chorangiosis (50%), fibromuscular sclerosis (50%), and villous edema (38.6%). Significant villous fibrinoid necrosis, villous edema, and significant fibromuscular sclerosis were more prevalent in the GDM group. The present study concluded that gestational diabetes mellitus induces histopathological phenotypes in the full-term placenta. Increased decidual vasculopathy, syncytial knots, retroplacental hemorrhage, classification, villous agglutination, chorangiosis, villous edema, villous fibroid necrosis, and fibromuscular sclerosis may indicate GDM in the mother. Such findings in the placenta of a woman who has not been diagnosed with GDM increase the need for GDM examination in future pregnancies.